The Single Action Army revolver is the main firearm seen in the film. Roy O'Bannon (Owen Wilson) carries a pair of Colt Single Action Army revolvers with custom pearl grips for the majority of the movie. Marshal Nathan Van Cleef (Xander Berkeley) also carries dual SAA's.
After his Single Action Army pistols are taken away by Marshal Van Cleef, Roy can be seen using a Smith & Wesson Schofield in conjunction with Lo Fong's Chamelot-Delvigne 1873 during the church shootout.
In the scene were the bar fight is broken up, the local sheriff is seen firing this gun into the ceiling. One of Roy's goons before they turned on him had this shotgun but sawed off, the fat guy. "John's" Native American wife Falling Leaves (Brandon Merrill) also used one to spook cattle to break open a jail he and Roy were in.
Falling Leaves (Brandon Merrill), the Native American wife of Chong Wang (Jackie Chan), can be seen using a Henry 1860 rifle (as identified by the way she loads it by rotating the end of the gun to expose the tubular magazine) during the rescue of Chong and Roy at the Gallows.
At the beginning of the film, Andrews (Jason Connery), the man who brought Princess Pei Pei (Lucy Liu) to America, pulls what appears to be a Remington Rolling Block Cavalry single shot pistol as he threatens Lo Fong.
